Mine supply valve mine safety valve performance Certified

Jiangsu Lan valve General Equipment Co., Ltd. is located in Changzhou City Yokoyama Town, convenient transportation and economic prosperity. Jiangsu Lan valve will be excellent product quality, reasonable prices and excellent after-sales service and dedication for you! Explosion-proof multi-turn electric actuator for opening and closing parts of linear motion valves, such as gate valves, diaphragm valves, piston valve, water valve and so on. For the valve open, close or adjust. Is the valve to realize remote control, centralized control of the essential drive and self-control. They have a full-featured, reliable performance, advanced control system, small size, light weight, ease of use and maintenance. Widely used in electric power, metallurgy, petroleum, chemical, paper, sewage treatment and other sectors.江苏兰 valve General Equipment Co., Ltd., a coal mine gas pumps and automation needed for a dedicated drainage valve configured ZB series of mine explosion-proof structure means points flameproof electric valve: This series of electric devices require explosive gas mixture inside the product Explosion , the flameproof enclosure shall not be damaged or explosive mixture outside the explosion electrical device, for which:. a component parts such as flameproof enclosure box, cover, junction box cover, junction box housing, etc., subject to 1.0 after finishing MPa, which lasted no less than 10S hydrostatic test pass. b. Internal length flameproof joint clearance, surface roughness and the junction box between bare conductors, bare metal conductor clearances and creepage distances between product design should be consistent with the requirements. c. bolted flameproof enclosure are equipped with spring washers to prevent self-loosening. d. electrical equipment box, cover, stroke bush, torque bushings, junction box housing, junction box cover are made of gray cast iron HT250. e. box, cover, stroke bush, torque bushings, junction box housing, junction box cover, splice tray, explosion connected sets, seals flameproof components. f seals made of NBR XH-50, Jiangsu Lan valve General Equipment Co., Ltd. has always been committed to the "leading technology, quality and efficiency, customer first, the undersigned about compliance" business philosophy. To improve customer service system, and we "do everything for the user satisfaction" commitment. Mine explosion-proof multi-turn valve actuators torque control mechanism: When the output shaft torque is subject to certain post, in addition to the rotation of the worm things, axial displacement, the crank drive, the crank drive bracket hit the block by angular displacement; when torque output shaft torque increases to the setting, then stent displacement amount so that the torque generated by the switching operation, thereby cutting off the motor power, motor stops. In order to achieve the electric actuator output torque control, electric valve to protect the goal.